Iostephane
| Iostephane | |
|---|---|
| |
| Iostephane heterophylla | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Heliantheae |
| Subtribe: | Helianthinae |
| Genus: | Iostephane Benth. |
| Type species | |
| Iostephane heterophylla | |
| Synonyms[1] | |
| |
Iostephane is a genus of Mexican flowering plants in the family Asteraceae.[2][3][4] They were first published in G.Bentham & J.D.Hooker, Genera Plantarum Vol.2 on page 368 in 1873.[5]
The species are rosette-forming herbaceous perennials that produce relatively large heads with yellow or purple (I. heterophylla) rays. They have large, somewhat quadrate cypselae (achenes), that may either have or lack a pappus.
Molecular phylogenetic studies by Schilling in 1991,[6] suggested that there is an unexpectedly close relationship between Iostephane and Dendroviguiera (formerly Viguiera sect. Maculatae), a genus of shrubs and trees that is also endemic to Mexico.[7]
Species
[edit]As accepted by Plants of the World Online,[5] and Global Compositae Checklist;[1]
- Iostephane heterophylla (Cav.) Benth. – widespread from Chihuahua to Oaxaca
- Iostephane madrensis (S.Wats.) Strother – Chihuahua
- Iostephane papposa J. J. Fay – Oaxaca
- Iostephane trilobata Hemsl. – Chiapas, Oaxaca, Puebla, México State
References
[edit]- ^ a b Flann, C (ed) 2009+ Global Compositae Checklist
- ^ Bentham, George. 1873. Genera Plantarum 2: 368 in Latin
- ^ Strother, J. L. 1983. Pionocarpus becomes Iostephane (Compositae: Heliantheae): a synopsis. Madroño 30: 34-48.
- ^ Tropicos, Iostephane Benth.
- ^ a b "Iostephane Benth. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2 November 2023.
- ^ Schilling, E. E. and J. L. Panero. 1991. Evidence for a close relationship between Iostephane and Viguiera sect. Maculatae (Asteraceae: Heliantheae). American Journal of Botany 78: 1054-1062.
- ^ Schilling, E, E. and J. L. Panero 2011. A revised classification of subtribe Helianthinae (Asteraceae: Heliantheae). II. Derived lineages. Botanical Journal of the Linnean Society 167: 311-331.
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